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General| Power Supply | 24 VDC |
|---|---|
| Communication Protocol | HART |
| Input Signal | 4-20 mA |
| Operating Temperature | -40 to +180°F (-40 to +82°C) |
| Ambient Temperature Range | -40 to +180°F (-40 to +82°C) |
| Enclosure Rating | NEMA 4X |
Provides installation, operation, maintenance, and parts information for the Fisher 377 trip valve.
Explains 377 pressure-sensing trip valves and their applications where specific valve/actuator action is required.
Details technical specifications for 377 trip valves, including configurations, pressure, temperature, and flow coefficients.
Provides contact information for available training courses for 377 trip valves and other products.
Safety warnings regarding personal injury from sudden release of process pressure during installation.
Caution regarding leak testing and the integrity of control system accessories with trip valves.
Safety warning about potential injury if instrument air supply is not clean, dry, and oil-free.
Warning about potential injury from flammable/hazardous gas and the need for ventilation.
Caution regarding excessive pipe compound and its effect on trip valve operation.
Procedure for calibrating the trip valve, including safety precautions.
Safety warning for taking the trip valve out of service during calibration.
Explains the fail-down mode operation of the 377D trip valve.
Safety warnings for performing maintenance operations on the trip valve.
Safety warning for taking the trip valve out of service for periodic checks.
Warning for isolating valve and releasing pressure before part replacement.
Caution to prevent damage to the upper diaphragm during replacement.
Information on ordering replacement parts, referencing serial numbers.
Details on available repair kits including common components.
Lists common parts for trip valve construction with key numbers and materials.
